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Modelling monetary policy in South Africa: Focus on inflation targeting era using a simple learning rule

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Author Info
Ruthira Naraidoo () (Department of Economics, University of Pretoria)
Rangan Gupta () (Department of Economics, University of Pretoria)

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Abstract

A simple empirical nonlinear framework is used to analyse monetary policy between 1983 and 2007 in South Africa, focusing on the policy of in?ation targeting introduced in Feb 2000, more precisely when the South African Reserve Bank (SARB) announced that an inflation zone targeting regime of 3-6% would be in place. We find that a model specification embodying a simple inflation learning rule for the future inflation rate seems to provide a better understanding of the decision process made by the SARB in its interest rate setting policy. The main findings are that the adoption of inflation targeting led to significant changes in monetary policy, secondly, post-2000 monetary policy is asymmetric as policy-makers respond more to downward deviation of inflation away from the target, thirdly, post-2000 policy-makers may be attempting to keep inflation within the 4.5%-6.9% range rather than pursuing a target zone of 3-6% as generally pre- announced and fourthly, the response of monetary policy to in?ation is nonlinear as interest rates respond more when inflation is further from the target.

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Publisher Info
Paper provided by University of Pretoria, Department of Economics in its series Working Papers with number 200904.

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Length: 14 pages
Date of creation: Jan 2009
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Handle: RePEc:pre:wpaper:200904

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Related research
Keywords: Monetary policy; inflation targeting; inflation learning rule; nonlinear smooth transition model;

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Find related papers by JEL classification:
C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies

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  1. Geoffrey Woglom, 2003. "How Has Inflation Targeting Affected Monetary Policy in South Africa?," South African Journal of Economics, Economic Society of South Africa, vol. 71(2), pages 198-210, 06. [Downloadable!] (restricted)
  2. Marco Vega & Diego Winkelried, 2005. "Inflation Targeting and Inflation Behavior: A Successful Story?," Macroeconomics 0502026, EconWPA. [Downloadable!]
    Other versions:
  3. Ben S. Bernanke & Mark Gertler, 2001. "Should Central Banks Respond to Movements in Asset Prices?," American Economic Review, American Economic Association, vol. 91(2), pages 253-257, May. [Downloadable!] (restricted)
  4. Bomfim, Antulio N & Rudebusch, Glenn D, 2000. "Opportunistic and Deliberate Disinflation under Imperfect Credibility," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 32(4), pages 707-21, November.
    Other versions:
  5. Aksoy, Yunus & Orphanides, Athanasios & Small, David & Wieland, Volker & Wilcox, David, 2006. "A quantitative exploration of the opportunistic approach to disinflation," Journal of Monetary Economics, Elsevier, vol. 53(8), pages 1877-1893, November. [Downloadable!] (restricted)
    Other versions:
  6. Taylor, John B., 1993. "Discretion versus policy rules in practice," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 39(1), pages 195-214, December. [Downloadable!] (restricted)
  7. Janine Aron & John Muellbauer, 2000. "Estimating Monetary Policy Rules for South Africa," Working Papers Central Bank of Chile 89, Central Bank of Chile. [Downloadable!]
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  8. repec:bep:sndecm:6:2002:2:1006-1006 is not listed on IDEAS
  9. A. Robert Nobay & David A. Peel, 2003. "Optimal Discretionary Monetary Policy in a Model of Asymmetric Central Bank Preferences," Economic Journal, Royal Economic Society, vol. 113(489), pages 657-665, 07. [Downloadable!] (restricted)
  10. Dolado, Juan J. & María-Dolores, Ramón & Naveira Barrero, Manuel, 2000. "Asymmetries In Monetary Policy Rules: Evidence For Four Central Banks," CEPR Discussion Papers 2441, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  12. Richard Clarida & Jordi Galí & Mark Gertler, 2000. "Monetary Policy Rules And Macroeconomic Stability: Evidence And Some Theory," The Quarterly Journal of Economics, MIT Press, vol. 115(1), pages 147-180, February. [Downloadable!] (restricted)
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  13. Schaling, Eric, 2003. "Learning, inflation expectations and optimal monetary policy," Research Discussion Papers 20/2003, Bank of Finland. [Downloadable!]
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  14. Christopher Martin & Costas Milas, 2004. "Modelling Monetary Policy: Inflation Targeting in Practice," Economica, London School of Economics and Political Science, vol. 71(281), pages 209-221, 05. [Downloadable!] (restricted)
    Other versions:
  15. Alberto Ortiz & Federico Sturzenegger, 2007. "Estimating Sarb'S Policy Reaction Rule," South African Journal of Economics, Economic Society of South Africa, vol. 75(4), pages 659-680, December. [Downloadable!] (restricted)
  16. Lars E.O. Svensson, 2002. "Inflation Targeting: Should It Be Modeled as an Instrument Rule or a Targeting Rule?," NBER Working Papers 8925, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  17. Dolado, Juan J. & Maria-Dolores, Ramon & Naveira, Manuel, 2005. "Are monetary-policy reaction functions asymmetric?: The role of nonlinearity in the Phillips curve," European Economic Review, Elsevier, vol. 49(2), pages 485-503, February. [Downloadable!] (restricted)
  18. Schaling, Eric, 2004. "The Nonlinear Phillips Curve and Inflation Forecast Targeting: Symmetric versus Asymmetric Monetary Policy Rules," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 36(3), pages 361-86, June.
    Other versions:
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